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Prius as a home electrical generator

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7.9K views 6 replies 4 participants last post by  SeanTHing  
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#1 ·
A friend of mine, a physicist, gave me an interesting idea:
Buy a good strong power inverter, like 1000W Schumacher,
and hook it to the 12-V battery. Put the keys in the ignition.
The power is enough to drive your refrigerator, LED lights and laptop and cell phones chargers during emergency blackout.
How it works: The 12-V battery takes electricity from the big battery.
When the Li battery drops under min level, engine starts and recharges it.
Then engine shuts down and waits till the next power drop down.
Pros: No need to buy, store and maintain a generator from HomeDepot.
1000 W power inverter is the size of the shoe box.
The car you drive every day is ready to give you power anytime.
No rusty or clogged carburetor.
Prius will turn on 10-15 min each hour or so. Will not produce unused electricity all the time, only as much as you consume.
Prius is silent. emergency generators are noisy.

However, another friend of mine, car specialist and engineer, said it will not work with Prius, but perhaps will work with Volt. His argument, Prius will only generate electricity for as long as it moves.
 
Discussion starter · #4 ·
PS: I did my home work. This is an old idea.
There are places over the internet about this.
12-V battery is not involved.
Plug the big battery to a big inverter. 2-3 or 5 kW, depending how much you plan to draw.
It will save money compared to standard generators, because the Prius engine is much more efficient than the gas generator honda or briggs+stratton. And also, because you only generate what you need. And it is silent!
 
Discussion starter · #3 ·
Dear Easy Rider,
Thank you for your quick answer.
The 1000 W inverter is a bit overkill, but we should have extra capacity.
Regular refrigerator is rated at 6.5A, i.e. 700W.
This is only for few seconds, until it reaches the pressure differential.
After that the power consumption drops to 200-300 W.
Correct me, I may be wrong.

Drawing 85 A from a car battery is not a problem, especially a few seconds.
Cranking average car with average battery, current goes to 200-300 A.
For few seconds only, true.
The biggest problem, I think, is how much current can the car produce to refill the 12-V battery.

That's why, I insist that only LED lights, laptop and cell phone chargers should be plugged in. The big consumers are AC, water heater, dryer, etc. However, during emergency, we can go filthy stinky and unshaven for few days. Hot water is always available on the gas grill.
Most important, to save the food from spoiling.
 
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